Absorption and scattering of massless scalar wave from Regular Black Holes

被引：0
作者：
Mao-Yuan Wan
Chen Wu
机构：
[1] University of Shanghai for Science and Technology,Shanghai Advanced Research Institute
[2] Chinese Academy of Sciences,undefined
来源：
General Relativity and Gravitation | 2022年 / 54卷
关键词：
Regular black hole; Scalar wave; Black hole scattering theory; Null geodesic;
D O I：
暂无
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学科分类号：
摘要：
In this work, we numerically investigate the scattering and absorption cross section of the massless scalar field from some well-known regular black holes by using the partial wave approach. Our computational results indicate that the larger the parameters, the lower the associated total absorption cross section maxima. When compared to the Schwarzschild black hole, the scattering cross section is enhanced in some regular black hole spacetimes, meanwhile the scattering width is narrow in the forward orientation. Moreover, it is found that the null geodesics of the critical impact parameter and the geometrical optical value in the high frequency regime have similar changing behavior.
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